论文标题
碰撞二进制WR 147的全球视图
A global view on the colliding-wind binary WR 147
论文作者
论文摘要
我们从全球对碰撞的二进制WR 147的看法中介绍了结果。我们分析了通过使用现代气氛模型来计算光学上薄的结块，分析了用Gran Telescopio Canarias和档案频谱获得的WR 147的新光谱。我们采用了一种网格模型方法来得出WR 147中两个恒星成分的一些基本物理特性。对于当前可接受的630 PC到WR 147的距离，通过建模其光谱而得出的质量损失速率值与对其X射线发射进行建模的相应是可接受的。但是，它们的无线电通量比观察到的较低。对于此问题的合理解决方案可能是，如果距离恒星（射击区域）大距离的体积填充因子是否小于靠近恒星（光学形成区域）的填充因子。采用这一点，该模型可以匹配WR 147的光学和热无线电发射。因此，碰撞二进制WR 147的全局视图表明，它在不同光谱域中的观察性能可以在自称的物理图片中解释。
We present results from a global view on the colliding-wind binary WR 147. We analysed new optical spectra of WR 147 obtained with Gran Telescopio CANARIAS and archive spectra from the Hubble Space Telescope by making use of modern atmosphere models accounting for optically thin clumping. We adopted a grid-modelling approach to derive some basic physical characteristics of both stellar components in WR 147. For the currently accepted distance of 630 pc to WR 147, the values of mass-loss rate derived from modelling its optical spectra are in acceptable correspondence with that from modelling its X-ray emission. However, they give a lower radio flux than observed. A plausible solution for this problem could be if the volume filling factor at large distances from the star (radio-formation region) is smaller than close to the star (optical-formation region). Adopting this, the model can match well both optical and thermal radio emission from WR 147. The global view on the colliding-wind binary WR 147 thus shows that its observational properties in different spectral domains can be explained in a self-consistent physical picture.
